The B744 (VH-OEI) on Tuesday 5 November's QF27 (1245 hours SYD - SCL) did not push back until 1425, so same day arrival should be 1210, an hour behind. This will delay the 1335 hours SCL - SYD (QF28) by a predicted 35 minutes in pushback with Wednesday 6 arrival in SYD at 1820, half an hour late.
The aircraft arrived in SYD this morning at 0611, only six minutes tardy on QF74 ex SFO so goodness knows why it failed to depart SYD on time.
Another B744 (QF63, the scheduled 1135 hours SYD - JNB, VH-OEG) was worse, pushing back at 1523 hours so same day arrival in local time for South Africa has become a suggested 1925, 170 late - meaning on a gate-to-gate basis 58 minutes of the departure delay is predicted to be picked up. 'The 64' tonight is estimated to depart JNB at 2105 hours, 135 late, arriving at its gate in SYD on Wednesday 6 at 1745 hours, 130 minutes behind the timetable. At this stage the B744 is to form tomorrow mid evening's QF25 to HND (the 2135 hours from SYD) so barring a further significant delay, it should be able to punctually depart - touch wood.
OEG arrived SYD this morning 24 minutes early at 0911 on QF26 ex HND, so again, no standout reason for the extended delay to 'the 63.'
The six remaining B744 QF aircraft are hardly super old, with the most 'ancient' having just celebrated its 17th birthday (OEF, not OEE as one might expect). Given they don't have a long term future with the airline, are these few B744s (conversant with safety as the priority) on as close as possible to a 'minimum maintenance' regime, or are some parts becoming harder to source, resulting in delays to passengers? Or are there fewer qualified staff to operate these Queens of the Skies, hence making it hard to source a replacement staffer quickly if one rings in sick?